Realtek wireless problems

Hi,
I'm trying to run BT5 on a laptop with an internal Realtek RTL8192E wireless card. The drivers appear to be loading ok (appears as wlan0 and doesn't produce any errors when I try to set it up with iwconfig), but the card doesn't appear to be communicating over the air.

No networks are visible either from the gui or when I run iwlist scan.

The only time it's worked is once when I've run iwlist scan straight after booting and it's produced a list of access points as expected, although I haven't been able to reproduce this.

Has anyone else had this problem or got any ideas on how to fix it?

Hello, I'm new and definitely not an authority on this. But believe I heard or read that onboard/internal wireless cards are not officially supported in backtrack5, really only USB dongles with common chips are. But I could easily be dead wrong. It's not in the Wiki as supported though. So that should at least tell you something.

-Charlie